/**
 * @license Copyright (c) 2003-2023, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */
/**
 * @module table/commands/removerowcommand
 */
import { Command } from 'ckeditor5/src/core';
/**
 * The remove row command.
 *
 * The command is registered by {@link module:table/tableediting~TableEditing} as the `'removeTableRow'` editor command.
 *
 * To remove the row containing the selected cell, execute the command:
 *
 * ```ts
 * editor.execute( 'removeTableRow' );
 * ```
 */
export default class RemoveRowCommand extends Command {
    /**
     * @inheritDoc
     */
    refresh() {
        const tableUtils = this.editor.plugins.get('TableUtils');
        const selectedCells = tableUtils.getSelectionAffectedTableCells(this.editor.model.document.selection);
        const firstCell = selectedCells[0];
        if (firstCell) {
            const table = firstCell.findAncestor('table');
            const tableRowCount = tableUtils.getRows(table);
            const lastRowIndex = tableRowCount - 1;
            const selectedRowIndexes = tableUtils.getRowIndexes(selectedCells);
            const areAllRowsSelected = selectedRowIndexes.first === 0 && selectedRowIndexes.last === lastRowIndex;
            // Disallow selecting whole table -> delete whole table should be used instead.
            this.isEnabled = !areAllRowsSelected;
        }
        else {
            this.isEnabled = false;
        }
    }
    /**
     * @inheritDoc
     */
    execute() {
        const model = this.editor.model;
        const tableUtils = this.editor.plugins.get('TableUtils');
        const referenceCells = tableUtils.getSelectionAffectedTableCells(model.document.selection);
        const removedRowIndexes = tableUtils.getRowIndexes(referenceCells);
        const firstCell = referenceCells[0];
        const table = firstCell.findAncestor('table');
        const columnIndexToFocus = tableUtils.getCellLocation(firstCell).column;
        model.change(writer => {
            const rowsToRemove = removedRowIndexes.last - removedRowIndexes.first + 1;
            tableUtils.removeRows(table, {
                at: removedRowIndexes.first,
                rows: rowsToRemove
            });
            const cellToFocus = getCellToFocus(table, removedRowIndexes.first, columnIndexToFocus, tableUtils.getRows(table));
            writer.setSelection(writer.createPositionAt(cellToFocus, 0));
        });
    }
}
/**
 * Returns a cell that should be focused before removing the row, belonging to the same column as the currently focused cell.
 * - If the row was not the last one, the cell to focus will be in the row that followed it (before removal).
 * - If the row was the last one, the cell to focus will be in the row that preceded it (before removal).
 */
function getCellToFocus(table, removedRowIndex, columnToFocus, tableRowCount) {
    // Don't go beyond last row's index.
    const row = table.getChild(Math.min(removedRowIndex, tableRowCount - 1));
    // Default to first table cell.
    let cellToFocus = row.getChild(0);
    let column = 0;
    for (const tableCell of row.getChildren()) {
        if (column > columnToFocus) {
            return cellToFocus;
        }
        cellToFocus = tableCell;
        column += parseInt(tableCell.getAttribute('colspan') || '1');
    }
    return cellToFocus;
}
